Both of these offer different advantages:
Bitcoin is the safest cryptocurrency and has reached the widest audience.
Not to mention holding a third of the entire market's value.
Ethereum is right there with it, holding second place on the ranks.
DApps, DAOs, and Smart Contracts changed the game.
So where do you bet your chips?
BTC or ETH?
I'll probably go with Ethereum,since the focus of manipulation is bitcoin,it has been making harder and harder for the top coin to reached the top again while the top 2 coin is just being better,and for sure will hit to speculated price first before bitcoin does.
I am one of those investors who prefer to have different coins in his purse, in order to protect themselves from losing all the money in case of failure of one of the coins. Therefore, I make a choice in favor of Bitcoin and Ethereum.
This two great coin will never fail us,it's just whos going to give good profit is the issue,and for me thats ethereum because the capital is lower and the growth is getting higher